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427831919759 = 1979313910643
BaseRepresentation
bin1100011100111001100…
…01010000010010001111
31111220022100020101101202
412032130301100102033
524002144432413014
6524313202500115
742624034213136
oct6163461202217
91456270211352
10427831919759
11155495a68682
126ab0006463b
133146279980a
14169c86bc91d
15b1e000d3de
hex639cc5048f

427831919759 has 16 divisors (see below), whose sum is σ = 457507545600. Its totient is φ = 398904906816.

The previous prime is 427831919731. The next prime is 427831919771. The reversal of 427831919759 is 957919138724.

It is a cyclic number.

It is not a de Polignac number, because 427831919759 - 28 = 427831919503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 427831919695 and 427831919704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427831915759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14492 + ... + 925134.

It is an arithmetic number, because the mean of its divisors is an integer number (28594221600).

Almost surely, 2427831919759 is an apocalyptic number.

427831919759 is a deficient number, since it is larger than the sum of its proper divisors (29675625841).

427831919759 is a wasteful number, since it uses less digits than its factorization.

427831919759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911054.

The product of its digits is 34292160, while the sum is 65.

The spelling of 427831919759 in words is "four hundred twenty-seven billion, eight hundred thirty-one million, nine hundred nineteen thousand, seven hundred fifty-nine".

Divisors: 1 19 79 313 1501 5947 24727 469813 910643 17302217 71940797 285031259 1366875143 5415593921 22517469461 427831919759